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In the geocentric model for the solar system developed by Ptolemy, to what does the word "deferent" refer?
Q25: Earth would NOT have seasons if:<br>A) its
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Q42: Many amateur astronomers have telescopes with mirrors
Q57: Which of the following statements about Copernicus's
Q75: How much of the total surface of
Q75: Which of the following objects does NOT
Q178: The lowest amount of solar energy per
Q254: Who first proved that light is a
Q332: If you were at the South Pole
Q345: What factor has seriously reduced the effectiveness